ID   NB_PAEAT                Reviewed;         199 AA.
AC   A1R8X8;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=Peroxynitrite isomerase;
DE            EC=5.99.-.- {ECO:0000255|HAMAP-Rule:MF_01297};
DE   AltName: Full=Ferric nitrobindin;
DE            Short=Nb(III);
GN   OrderedLocusNames=AAur_2983;
OS   Paenarthrobacter aurescens (strain TC1).
OC   Bacteria; Actinobacteria; Micrococcales; Micrococcaceae; Paenarthrobacter.
OX   NCBI_TaxID=290340;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TC1;
RX   PubMed=17194220; DOI=10.1371/journal.pgen.0020214;
RA   Mongodin E.F., Shapir N., Daugherty S.C., DeBoy R.T., Emerson J.B.,
RA   Shvartzbeyn A., Radune D., Vamathevan J., Riggs F., Grinberg V.,
RA   Khouri H.M., Wackett L.P., Nelson K.E., Sadowsky M.J.;
RT   "Secrets of soil survival revealed by the genome sequence of Arthrobacter
RT   aurescens TC1.";
RL   PLoS Genet. 2:2094-2106(2006).
CC   -!- FUNCTION: Heme-binding protein able to scavenge peroxynitrite and to
CC       protect free L-tyrosine against peroxynitrite-mediated nitration, by
CC       acting as a peroxynitrite isomerase that converts peroxynitrite to
CC       nitrate. Therefore, this protein likely plays a role in peroxynitrite
CC       sensing and in the detoxification of reactive nitrogen and oxygen
CC       species (RNS and ROS, respectively). Is able to bind nitric oxide (NO)
CC       in vitro, but may act as a sensor of peroxynitrite levels in vivo.
CC       {ECO:0000255|HAMAP-Rule:MF_01297}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=peroxynitrite = nitrate; Xref=Rhea:RHEA:63116,
CC         ChEBI:CHEBI:17632, ChEBI:CHEBI:25941; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01297};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:63117;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01297};
CC   -!- COFACTOR:
CC       Name=heme b; Xref=ChEBI:CHEBI:60344;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01297};
CC       Note=Binds 1 heme b group per subunit, that coordinates a highly
CC       solvent-exposed Fe(III) atom. {ECO:0000255|HAMAP-Rule:MF_01297};
CC   -!- PATHWAY: Nitrogen metabolism. {ECO:0000255|HAMAP-Rule:MF_01297}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01297}.
CC   -!- DOMAIN: Forms a 10-stranded antiparallel beta-barrel structure able to
CC       accommodate a hydrophobic ligand in its interior. In fact, this fold
CC       hosts the heme group, which is located in a wide surface cleft.
CC       {ECO:0000255|HAMAP-Rule:MF_01297}.
CC   -!- SIMILARITY: Belongs to the nitrobindin family. {ECO:0000255|HAMAP-
CC       Rule:MF_01297}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP000474; ABM09399.1; -; Genomic_DNA.
DR   RefSeq; WP_011775625.1; NC_008711.1.
DR   AlphaFoldDB; A1R8X8; -.
DR   SMR; A1R8X8; -.
DR   STRING; 290340.AAur_2983; -.
DR   EnsemblBacteria; ABM09399; ABM09399; AAur_2983.
DR   KEGG; aau:AAur_2983; -.
DR   eggNOG; COG3485; Bacteria.
DR   HOGENOM; CLU_085483_0_1_11; -.
DR   OMA; EKCNFGQ; -.
DR   OrthoDB; 1524197at2; -.
DR   Proteomes; UP000000637; Chromosome.
DR   GO; GO:0020037; F:heme binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0062213; F:peroxynitrite isomerase activity; IEA:UniProtKB-UniRule.
DR   CDD; cd07828; lipocalin_heme-bd-THAP4-like; 1.
DR   Gene3D; 2.40.128.20; -; 1.
DR   HAMAP; MF_01297; nitrobindin; 1.
DR   InterPro; IPR012674; Calycin.
DR   InterPro; IPR022939; Nb(III)_bact/plant.
DR   InterPro; IPR045165; Nitrobindin.
DR   InterPro; IPR014878; THAP4-like_heme-bd.
DR   PANTHER; PTHR15854; PTHR15854; 1.
DR   Pfam; PF08768; THAP4_heme-bd; 1.
DR   SUPFAM; SSF50814; SSF50814; 1.
PE   3: Inferred from homology;
KW   Heme; Iron; Isomerase; Metal-binding; Reference proteome.
FT   CHAIN           1..199
FT                   /note="Peroxynitrite isomerase"
FT                   /id="PRO_0000356895"
FT   MOTIF           21..27
FT                   /note="GXWXGXG"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01297"
FT   BINDING         190
FT                   /ligand="heme b"
FT                   /ligand_id="ChEBI:CHEBI:60344"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01297"
SQ   SEQUENCE   199 AA;  21985 MW;  F4D5C5CEA639F50C CRC64;
     MPIEIPTDLT PELVPLSWLI GEWEGRGRLG SGDEDSEHFV QRVSFTHNGL PYLQYRAETW
     LSDDAGEKLR PLTVETGFWA LERKLEEGDG GPGLIPADIV PVLKTADEVE ERRNKEGGFD
     ISVSIAHPGG ITELYYGQIK GPQIQLSTDM VMRGSHSKEY TAATRIFGLV DGNLLWRWDV
     AASGKALEAH ASAFLHKVS